Design for mobile site version of existing ecommerce website

We want visual design/UX for various pages of the mobile version of an existing e-commerce website. We only have a desktop version for the website and we need a design for the mobile version, including buttons, gradients etc. for various pages of our existing site. Design elements will be required for the home page, product details page, product browsing pages, shopping cart page, article pages, sign in/sign up page, search box, etc. The website we are looking to port to a mobile version is [login to view URL]